The TrickBot trojan is adding man-in-the-browser (MitB) capabilities for stealing online banking credentials that resemble Zeus, the early banking trojan, researchers said — potentially signaling a coming onslaught of fraud attacks.
TrickBot is a sophisticated (and common) modular threat known for stealing credentials and delivering a range of follow-on ransomware and other malware. But it started out as a pure-play banking trojan, harvesting online banking credentials by redirecting unsuspecting users to malicious copycat websites.
According to researchers at Kryptos Logic Threat Intelligence, this functionality is carried out by TrickBot’s webinject module. When victim attempts to visit a target URL (like a banking site), the TrickBot webinject package performs either a static or dynamic web injection to achieve its goal, as researchers explained: